I did try posting that earlier from my iPad, but I was having issues with actually making posts. Haven't been able to replicate since. But yes, deleting users also removes their posts.
Some kind of plugin tester that checks if plugins break before they are fully installed.
or some fallback mode to disable them when everything fails
A version check is being developed for next major release, so plugins will have to state what version they support, you then won't see uncompatible plugins in your ACP.
Compatibility notes should be standard in all plugins, but it's still early. We're moving from
compatibility, so that should cover all cases, and allow the package manager to show only plugins approved for installation.